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Type.GetHashCode Method

Returns the hash code for this instance.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
'Declaration
Public Overrides Function GetHashCode As Integer

Return Value

Type: System.Int32
The hash code for this instance.

Implements

_Type.GetHashCode
_MemberInfo.GetHashCode

This method overrides Object.GetHashCode.

The following example displays the hash code of the System.Windows.Forms.Button class.

Imports System
Imports System.Security
Imports System.Reflection
Imports Microsoft.VisualBasic

' Compile this sample using the following command line: 
' vbc type_gethashcode_getfields.vb /r:"System.Windows.Forms.dll" /r:"System.dll" 

Class FieldsSample

    Public Shared Sub Main()
        Dim myType As Type = GetType(System.Net.IPAddress)
        Dim myFields As FieldInfo() = myType.GetFields((BindingFlags.Static Or BindingFlags.NonPublic))
        Console.WriteLine(ControlChars.Lf & "The IPAddress class has the following nonpublic fields: ")
        Dim myField As FieldInfo
        For Each myField In myFields
            Console.WriteLine(myField.ToString())
        Next myField
        Dim myType1 As Type = GetType(System.Net.IPAddress)
        Dim myFields1 As FieldInfo() = myType1.GetFields()
        Console.WriteLine(ControlChars.Lf & "The IPAddress class has the following public fields: ")
        Dim myField1 As FieldInfo
        For Each myField1 In myFields1
            Console.WriteLine(myField.ToString())
        Next myField1
        Try
            Console.WriteLine("The HashCode of the System.Windows.Forms.Button type is: {0}", GetType(System.Windows.Forms.Button).GetHashCode())
        Catch e As SecurityException
            Console.WriteLine("An exception occurred.")
            Console.WriteLine(("Message: " & e.Message))
        Catch e As Exception
            Console.WriteLine("An exception occurred.")
            Console.WriteLine(("Message: " & e.Message))
        End Try 
    End Sub 'Main
End Class 'FieldsSample

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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